At present, what kind of high-voltage circuit breaker is widely used in 110kV and above power grids.（ ）
A、Vacuum circuit breaker
B、High voltage circuit breaker
C、SF6 circuit breaker
D、 Air circuit breaker
Electrical Equipment and Operation（电气设备及运行）
章节列表
Chapter 1 Cognition of Power Plants and Stations10Chapter 2 Switching Equipment and Operation57Chapter 3 Transformer and Operation38Chapter 4 Current-limiting Electrical Appliances and Operation9Chapter 5 Reactive Power Compensation Equipment and Its Operation10chapter 6 Busbar, Cable, Insulator and Operation10Chapter 7 Basic Operation of Electrical Primary System22Chapter 8 Power Distribution Device and Operation33